<template>
  <div class="icons">
    <swiper>
      <swiper-slide v-for="(page, index) in pages" :key="index">
        <div class="icon" v-for="item in page" :key="item.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl" />
          </div>
          <p class="icon-desc">{{ item.desc }}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
  props: {
    list: Object,
    required: true,
  },
  computed: {
    pages() {
      const pages = [];
      this.list.iconList.forEach((item, index) => {
        //page当前下标的数据应该展示在轮播图的第几页   index是3 下标是2  Math.floor(2/8)向下取整为0  Math.floor(8/8)向下取整为1
        const page = Math.floor(index / 8);
        if (!pages[page]) {
          pages[page] = [];
        }
        pages[page].push(item);
      });
      return pages;
    },
  },
};
</script>

<style lang="stylus" scoped>
.icons >>> .swiper-container {
  height: 0;
  padding-bottom: 50%;
    background: white
}

.icon {
  position: relative;
  overflow: hidden;
  float: left;
  width: 25%;
  height: 0;
  padding-bottom: 25%;


  // background : red
  .icon-img {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0.44rem;
    // background :blue
    box-sizing: border-box;
    padding: 0.05rem;

    .icon-img-content {
      display: block;
      margin: 0 auto;
      height: 100%;
    }
  }

  .icon-desc {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 0.44rem;
    line-height: 0.44rem;
    text-align: center;
    color: #333;
  }
}
</style>